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Updated: Aug 24, 2025

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
Published on: April 1, 2017
A new approach to etching low-carbon microalloyed steels to reveal prior austenite grain boundaries and the
Karol F Rodriguez-Galeano1, Luis F Romano-Acosta1, Eric J Palmiere1
1Department of Materials Science and Engineering, The University of Sheffield, Sheffield, UK.
Abstract:
A modification to picric acid solutions has been undertaken to reveal the prior-austenite grain boundaries in microalloyed steels as a result of elemental segregation. It has been found the maximum addition of sodium dodecyl sulphate plus hydrochloric acid to fully reveal both the prior austenite grain boundaries and the final post-processed structures in these steels.
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